Deflate the tire completely if it has any air in it
Remove the old tire from the rim if needed
Inspect the rim for damage, rust, or debris
Inspect the tire for the correct size and any damage
Apply tire lubricant or soapy water to the tire beads and rim edges
Place one side of the tire bead onto the rim
Work the first bead fully into the rim using your hands
Place the second bead onto the rim starting opposite the valve stem
Push the second bead into the rim by hand as far as possible
Use tire irons carefully if needed to finish seating the bead
Keep the opposite side of the bead in the rim’s drop center while working
Make sure the valve stem is aligned and not pinched
Inflate the tire slowly
Check that both beads seat evenly around the rim
Inflate to the recommended pressure
Check for leaks around the bead and valve stem
Reinstall the wheel if it was removed